<template>
    <div class="singer" ref="singer">
        <SingerList :data="singers" @select="selectSinger" ref="list"></SingerList>
        <router-view/>
    </div>
</template>

<script type="text/ecmacript-6">
import {getSingerList} from 'api/singer'
import {ERR_OK} from 'api/config'
import Singer from 'common/js/singer'
import SingerList from 'base/SingerList/SingerList'
import { mapMutations } from 'vuex'
import { playListMixin } from 'common/js/mixin'

const HOT_NAME = '热门'
const HOT_SINGER_LENGTH = 10

export default {
    mixins: [playListMixin],
    data () {
        return {
            singers : []
        }
    },
    created () {
        this._getSingerList()
    },
    methods : {
        handlePlayList (playlist) {
            const bottom = playlist.length > 0 ? '60px' : ''
            this.$refs.singer.style.bottom = bottom
            this.$refs.list.refresh()
        },
        ...mapMutations({
            setSinger : 'SET_SINGER'
        }),
        _getSingerList() {
            getSingerList().then((res) => {
                if (res.code === ERR_OK) {
                    this.singers = this._normalLizeSinger(res.data.list)
                }
            })
        },
        _normalLizeSinger(list) {
            let map = {
                hot : {
                    title : HOT_NAME,
                    items : []
                }
            }
            list.forEach((item, index) => {
                if(index < HOT_SINGER_LENGTH) {
                    map.hot.items.push(new Singer({
                        id : item.Fsinger_mid,
                        name : item.Fsinger_name
                    }))
                }
                const key = item.Findex
                if(!map[key]) {
                    map[key] = {
                        title : key,
                        items : []
                    }
                }
                map[key].items.push(new Singer({
                    id : item.Fsinger_mid,
                    name : item.Fsinger_name
                }))
            })

            let hot = []
            let ret = []
            for(let key in map) {
                let val = map[key]
                if(val.title.match(/[a-zA-Z]/)) {
                    ret.push(val)
                } else if (val.title === HOT_NAME) {
                    hot.push(val)
                }
            }
            ret.sort((a,b) => {
                return a.title.charCodeAt(0) - b.title.charCodeAt(0)
            })
            return hot.concat(ret)
        },
        selectSinger (singer) {
            this.$router.push({
                path : `/singer/${singer.id}`
            })
            this.setSinger(singer)
        }
    },
    components : {
        SingerList
    }
}
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
.singer
    position : fixed
    top : 88px
    bottom : 0
    width : 100%
</style>
